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(width<=900px){.header-container{flex-direction:column;align-items:stretch}.header-nav{width:100%;overflow-x:auto}.nav-tab-btn{white-space:nowrap}}:root{--bg-primary:#0a0e17;--bg-secondary:#111827;--bg-card:#162032;--bg-card-hover:#1c2940;--bg-input:#0d1522;--bg-tertiary:#1f2937;--border-subtle:#243247;--border-focus:#f59e0b;--border-accent:#38bdf8;--amber-primary:#f59e0b;--amber-hover:#d97706;--amber-light:#fef3c7;--amber-glow:#f59e0b26;--cyan-primary:#0ea5e9;--cyan-hover:#0284c7;--cyan-light:#e0f2fe;--cyan-glow:#0ea5e926;--emerald-primary:#10b981;--emerald-hover:#059669;--emerald-light:#d1fae5;--emerald-glow:#10b98126;--rose-primary:#f43f5e;--rose-hover:#e11d48;--rose-glow:#f43f5e26;--indigo-primary:#6366f1;--indigo-glow:#6366f126;--text-main:#f8fafc;--text-muted:#94a3b8;--text-dim:#64748b;--text-inverse:#0b0f17;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-full:9999px;--shadow-sm:0 1px 3px #0000004d;--shadow-md:0 4px 12px #0006;--shadow-lg:0 10px 25px -5px #00000080, 0 8px 10px -6px #0006;--shadow-glow-amber:0 0 20px #f59e0b40;--shadow-glow-cyan:0 0 20px #0ea5e940;--font-sans:"Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-heading:"Outfit", var(--font-sans);--transition-fast:.15s ease;--transition-normal:.25s cubic-bezier(.4, 0, .2, 1)}