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2rem;max-width:600px;margin-left:auto;margin-right:auto}.download-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.btn-lg{padding:.875rem 2rem;font-size:1.0625rem}.scroll-to-top{position:fixed;bottom:2rem;right:2rem;width:3.5rem;height:3.5rem;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:50%;font-size:1.5rem;cursor:pointer;box-shadow:0 4px 20px #667eea66;transition:all .3s ease;z-index:1000;display:flex;align-items:center;justify-content:center}.scroll-to-top:hover{transform:translateY(-4px);box-shadow:0 6px 28px #667eea80}@media(max-width:1024px){.rules-grid{grid-template-columns:1fr}.rules-sidebar{position:static;margin-bottom:2rem}.rules-toc{max-width:100%}}@media(max-width:768px){.container-fluid{padding:0 1.5rem}.rules-main{padding:2rem 1.5rem}.rules-title{font-size:2rem}.rules-section-title{font-size:1.75rem}.rules-grid-cards,.info-cards{grid-template-columns:1fr}.download-card{padding:2rem 1.5rem}.download-actions{flex-direction:column}.download-actions .btn{width:100%}}.phase-examples{margin-top:2rem;padding-top:2rem;border-top:2px solid #f0f0f0}.examples-title{font-size:1.125rem;font-weight:700;color:#667eea;margin:0 0 1.25rem}.examples-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.25rem}.example-item{background:linear-gradient(135deg,#fafbfc,#fff);border:1px solid #e9ecef;border-radius:10px;padding:1.25rem;transition:all .3s ease}.example-item:hover{border-color:#667eea;box-shadow:0 4px 12px #667eea1a;transform:translateY(-2px)}.example-label{font-size:.875rem;font-weight:700;color:#667eea;margin-bottom:.625rem;display:inline-block;background:linear-gradient(135deg,#667eea1a,#764ba21a);padding:.375rem .75rem;border-radius:6px}.example-text{font-size:.9375rem;color:#6c757d;margin:0;line-height:1.6}@media(max-width:768px){.examples-grid{grid-template-columns:1fr}}.language-selector{position:fixed;top:1.5rem;right:1.5rem;z-index:10000}.language-selector-button{display:flex;align-items:center;gap:.5rem;padding:.5rem 1rem;background:#000000d9;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:2px solid rgba(0,0,0,.9);border-radius:var(--radius-lg);color:var(--text-white);font-weight:600;font-size:.95rem;cursor:pointer;transition:var(--transition);box-shadow:0 4px 12px #00000026}.language-selector-button:hover{background:#000000f2;border-color:#000;transform:translateY(-2px);box-shadow:0 6px 16px #0003}.language-flag{font-size:1.25rem;line-height:1}.language-code-btn{font-weight:700;font-size:.875rem;letter-spacing:.05em}.language-arrow{font-size:.75rem;opacity:.7;transition:transform .3s}.language-dropdown{position:absolute;top:calc(100% + .5rem);right:0;min-width:200px;background:var(--bg-white);border:2px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);overflow:hidden;animation:fadeInDown .2s ease-out}.language-option{width:100%;display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;background:var(--bg-white);border:none;color:var(--text-primary);font-weight:500;font-size:1rem;cursor:pointer;transition:var(--transition);text-align:left}.language-option:hover{background:var(--bg-light)}.language-option.active{background:linear-gradient(135deg,var(--bg-light) 0%,var(--bg-white) 100%);color:var(--color-primary);font-weight:600}.language-name{flex:1}.language-check{color:var(--color-success);font-weight:700;font-size:1.25rem}@media(max-width:768px){.language-selector-button{padding:.4rem .75rem;font-size:.85rem}.language-flag{font-size:1.1rem}.language-dropdown{min-width:180px}.language-option{padding:.65rem .85rem;font-size:.95rem}}