* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        :root {
            --primary: #0066ff;
            --primary-dark: #0052cc;
            --primary-light: #4d94ff;
            --success: #00c853;
            --warning: #ff9100;
            --text: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --bg: #ffffff;
            --bg-light: #f8fafc;
            --bg-blue: #eff6ff;
            --border: #e2e8f0;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 14px;
            --shadow: 0 1px 3px rgba(0,0,0,0.08);
            --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08);
            --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08);
        }
        
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        
        /* Navigation */
        nav {
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        
        nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .nav-logo {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), #6366f1);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.1rem;
        }
        
        .nav-title h1,
.nav-title .nav-brand-name {
            font-size: 1.2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        
        .nav-title span {
            font-size: 0.75rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        
        .nav-link {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.2s;
        }
        
        .nav-link:hover {
            color: var(--primary);
        }
        
        /* Hero */
        .hero {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            color: white;
            padding: 40px 0 50px;
            position: relative;
            text-align: center;
        }
        
        .hero .container {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.1);
            padding: 6px 14px;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 16px;
            backdrop-filter: blur(10px);
        }
        
        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        
        .hero h1 span {
            color: #fde047;
        }
        
        .hero p {
            font-size: 1.1rem;
            opacity: 0.9;
            margin-bottom: 8px;
            max-width: 550px;
            line-height: 1.5;
        }
        
        .hero .subtitle {
            font-size: 0.95rem;
            opacity: 0.7;
            margin-bottom: 24px;
        }
        
        .hero-buttons {
            display: flex;
            gap: 12px;
            margin-bottom: 24px;
            justify-content: center;
        }
        
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.95rem;
            text-decoration: none;
            transition: all 0.2s;
            cursor: pointer;
            border: none;
        }
        
        .btn-primary {
            background: white;
            color: var(--primary);
        }
        
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        
        .btn-secondary {
            background: transparent;
            color: white;
            border: 2px solid rgba(255,255,255,0.3);
        }
        
        .btn-secondary:hover {
            background: rgba(255,255,255,0.1);
            border-color: rgba(255,255,255,0.5);
        }
        
        .hero-trust {
            display: flex;
            gap: 24px;
            font-size: 0.85rem;
            opacity: 0.8;
            justify-content: center;
        }
        
        .hero-trust i {
            color: #4ade80;
            margin-right: 4px;
        }
        
        /* Features */
        .features {
            padding: 100px 0;
            background: var(--bg);
        }
        
        .section-header {
            text-align: center;
            max-width: 600px;
            margin: 0 auto 60px;
        }
        
        .section-header h2 {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        
        .section-header p {
            font-size: 1.125rem;
            color: var(--text-secondary);
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        
        .feature-card {
            text-align: center;
            padding: 40px 32px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            transition: all 0.3s;
        }
        
        .feature-card:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.5rem;
            color: white;
        }
        
        .feature-icon.blue {
            background: linear-gradient(135deg, #3b82f6, #2563eb);
        }
        
        .feature-icon.green {
            background: linear-gradient(135deg, #10b981, #059669);
        }
        
        .feature-icon.purple {
            background: linear-gradient(135deg, #8b5cf6, #7c3aed);
        }
        
        .feature-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        
        .feature-text {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        
        /* Calculator Section */
        .calculator {
            padding: 100px 0;
            background: var(--bg-light);
        }
        
        .calculator-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 32px;
            align-items: start;
        }
        
        .calculator-form {
            background: var(--bg);
            padding: 40px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
        }
        
        .calculator-header {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 32px;
            padding-bottom: 24px;
            border-bottom: 2px solid var(--border);
        }
        
        .calculator-icon {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, var(--primary), #6366f1);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.5rem;
        }
        
        .calculator-title h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        
        .calculator-title p {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        
        .affiliate-disclosure {
            background: #fefce8;
            border: 1px solid #facc15;
            border-radius: var(--radius);
            padding: 16px;
            margin-bottom: 24px;
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        
        .affiliate-disclosure strong {
            color: var(--text);
        }
        
        .form-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        
        .form-group {
            display: flex;
            flex-direction: column;
        }
        
        .form-group.full-width {
            grid-column: 1 / -1;
        }
        
        .form-label {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .form-label i {
            color: var(--primary);
        }
        
        .form-select, .form-input {
            padding: 14px 16px;
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-size: 1rem;
            font-family: inherit;
            background: var(--bg);
            transition: all 0.2s;
            width: 100%;
        }
        
        .form-select:focus, .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0,102,255,0.1);
        }
        
        .btn-calculate {
            width: 100%;
            padding: 18px;
            background: linear-gradient(135deg, var(--primary), #6366f1);
            color: white;
            border: none;
            border-radius: var(--radius);
            font-size: 1.1rem;
            font-weight: 700;
            cursor: pointer;
            margin-top: 24px;
            transition: all 0.2s;
            box-shadow: var(--shadow-md);
        }
        
        .btn-calculate:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        
        /* Results Panel */
        .results-panel {
            background: linear-gradient(135deg, #fefce8 0%, #fef9c3 100%);
            border: 2px solid #facc15;
            border-radius: var(--radius-lg);
            padding: 24px;
            position: sticky;
            top: 90px;
            align-self: start;
        }
        
        .results-header {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        
        .results-header i {
            font-size: 1.5rem;
            color: #f59e0b;
        }
        
        .results-header h3 {
            font-size: 1.1rem;
            font-weight: 700;
        }
        
        .results-intro {
            color: var(--text-secondary);
            font-size: 0.85rem;
            margin-bottom: 16px;
        }
        
        .result-item {
            margin-bottom: 12px;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(0,0,0,0.06);
        }
        
        .result-item:last-of-type {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        
        .result-label {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 6px;
            font-size: 0.8rem;
            color: var(--text-secondary);
        }
        
        .result-value {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
        }
        
        .result-value-sm {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
        }
        
        .result-bar {
            height: 6px;
            background: var(--border);
            border-radius: 3px;
            overflow: hidden;
            margin-bottom: 6px;
        }
        
        .result-bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--primary), #6366f1);
            border-radius: 3px;
            transition: width 0.3s ease;
        }
        
        .result-range {
            display: flex;
            justify-content: space-between;
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        
        .result-line-type {
            display: flex;
            align-items: center;
            gap: 10px;
            background: var(--bg);
            padding: 12px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }
        
        .line-type-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--text-muted);
            flex-shrink: 0;
        }
        
        .line-type-icon.fluorocarbon {
            background: linear-gradient(135deg, #dcfce7, #bbf7d0);
            color: #16a34a;
        }
        
        .line-type-icon.braided {
            background: linear-gradient(135deg, #f3e8ff, #e9d5ff);
            color: #9333ea;
        }
        
        .line-type-icon.monofilament {
            background: linear-gradient(135deg, #dbeafe, #bfdbfe);
            color: #2563eb;
        }

        .line-type-info {
            flex: 1;
        }

        .line-type-name {
            font-weight: 700;
            color: var(--text);
            margin-bottom: 2px;
            font-size: 0.9rem;
        }
        
        .line-type-desc {
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        
        .result-note {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 2px;
        }
        
        .results-actions {
            margin-top: 20px;
            margin-bottom: 12px;
        }
        
        .btn-shop, .btn-save {
            width: 100%;
            padding: 10px 14px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all 0.2s;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }
        
        .btn-shop {
            background: var(--success);
            color: white;
            border: none;
        }
        
        .btn-shop:hover:not(:disabled) {
            background: #00b248;
            transform: translateY(-1px);
        }
        
        .btn-shop:disabled {
            background: #ccc;
            cursor: not-allowed;
            opacity: 0.7;
        }
        
        .btn-save {
            background: var(--bg);
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        
        .btn-save:hover:not(:disabled) {
            background: var(--bg-blue);
            transform: translateY(-1px);
        }
        
        .btn-save:disabled {
            border-color: #ccc;
            color: #999;
            cursor: not-allowed;
            opacity: 0.7;
        }
        
        .results-status {
            text-align: center;
            padding: 8px;
            background: rgba(0,0,0,0.03);
            border-radius: var(--radius);
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        
        .results-status i {
            margin-right: 4px;
        }

        /* Comparison Section */
        .comparison {
            padding: 100px 0;
            background: var(--bg-light);
        }

        .comparison-table {
            background: var(--bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .comparison-table table {
            width: 100%;
            border-collapse: collapse;
        }

        .comparison-table th {
            background: var(--bg-light);
            padding: 16px 24px;
            text-align: left;
            font-weight: 600;
            color: var(--text-secondary);
            border-bottom: 2px solid var(--border);
        }

        .comparison-table td {
            padding: 16px 24px;
            border-bottom: 1px solid var(--border);
            color: var(--text);
        }

        .comparison-table tr:hover {
            background: var(--bg-light);
        }

        .comparison-table .check {
            color: var(--success);
        }

        .comparison-table .cross {
            color: #ef4444;
        }

        .comparison-table .highlight {
            color: var(--primary);
            font-weight: 600;
        }

        /* Species Section */
        .species {
            padding: 100px 0;
            background: var(--bg);
        }
        
        .species-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 20px;
        }
        
        .species-card {
            text-align: center;
            padding: 24px 16px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            cursor: pointer;
            transition: all 0.2s;
            text-decoration: none;
            color: inherit;
        }
        
        .species-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        
        .species-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            font-size: 1.25rem;
            color: white;
        }
        
        .species-name {
            font-weight: 700;
            font-size: 0.95rem;
            margin-bottom: 4px;
        }
        
        .species-line {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        
        /* Blog Preview Section */
        .blog-preview {
            padding: 100px 0;
            background: var(--bg-light);
        }
        
        .blog-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        
        .blog-card {
            background: var(--bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all 0.3s;
            text-decoration: none;
            color: inherit;
        }
        
        .blog-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        
        .blog-card-image {
            height: 180px;
            background: linear-gradient(135deg, var(--primary), #6366f1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 3rem;
        }
        
        .blog-card-content {
            padding: 24px;
        }
        
        .blog-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        
        .blog-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }
        
        .blog-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }
        
        /* Footer */
        footer {
            background: #0f172a;
            color: white;
            padding: 80px 0 40px;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr repeat(3, 1fr);
            gap: 64px;
            margin-bottom: 64px;
        }
        
        .footer-brand {
            max-width: 300px;
        }
        
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }
        
        .footer-logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), #6366f1);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
        }
        
        .footer-logo h3 {
            font-size: 1.25rem;
            font-weight: 800;
        }
        
        .footer-logo span {
            font-size: 0.75rem;
            color: #94a3b8;
            display: block;
        }
        
        .footer-desc {
            color: #94a3b8;
            font-size: 0.9rem;
            line-height: 1.6;
        }
        
        .footer-title {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 20px;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 12px;
        }
        
        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.2s;
        }
        
        .footer-links a:hover {
            color: white;
        }
        
        .footer-bottom {
            padding-top: 40px;
            border-top: 1px solid #1e293b;
            text-align: center;
            color: #64748b;
            font-size: 0.875rem;
        }
        
        .footer-bottom a {
            color: #64748b;
            text-decoration: none;
        }
        
        .footer-bottom a:hover {
            color: #94a3b8;
        }
        
        /* Responsive */
        @media (max-width: 1024px) {
            .calculator-grid {
                grid-template-columns: 1fr;
            }
            .results-panel {
                position: static;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .species-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .blog-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px;
            }
        }
        
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero p {
                font-size: 0.95rem;
            }
            .hero-buttons {
                flex-direction: column;
                width: 100%;
                max-width: 280px;
            }
            .hero-trust {
                flex-direction: column;
                gap: 8px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .species-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .blog-grid {
                grid-template-columns: 1fr;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }