@import "https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,400&display=swap";*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-base:#0f1117;--bg-surface:#161b27;--bg-card:#1c2333;--bg-card-hover:#212840;--bg-input:#131929;--border:#2a3347;--border-focus:#4f6bff;--accent:#4f6bff;--accent-hover:#6680ff;--accent-muted:#4f6bff1f;--accent-glow:#4f6bff33;--text-primary:#eef0f8;--text-secondary:#8b95b0;--text-muted:#5a6480;--success:#22c55e;--success-bg:#22c55e1a;--warning:#f59e0b;--warning-bg:#f59e0b1a;--danger:#ef4444;--danger-bg:#ef44441a;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--shadow-sm:0 1px 3px #0006;--shadow-md:0 4px 16px #0006;--shadow-lg:0 8px 32px #00000080;--font-display:"Syne", sans-serif;--font-body:"DM Sans", 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.form-input:last-of-type{grid-column:1/-1}.converter-row{grid-template-columns:1fr}.converter-arrow{transform:rotate(90deg)}.result-grid{grid-template-columns:repeat(2,1fr)}.why-section{padding:3rem 1.25rem}.tools-grid,.wc-stats{grid-template-columns:repeat(2,1fr)}}@media (width<=480px){.navbar{padding:0 1rem}.tools-grid{grid-template-columns:repeat(2,1fr)}.result-grid{grid-template-columns:1fr 1fr}.hero-title{font-size:2rem}.subject-row{grid-template-columns:1fr}}@keyframes fadeUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.hero-badge,.hero-title,.hero-subtitle,.hero-actions{animation:.6s both 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var(--border);color:var(--text-secondary);font-size:.82rem;font-weight:600;font-family:var(--font-body);background:0 0;padding:7px 18px;transition:all .2s}.mode-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}