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p{color:var(--text-tertiary);line-height:1.6;margin:0}.tips-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1rem}.tip-card{padding:1.5rem;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;text-align:center}.tip-card h3{color:var(--text-primary);margin-bottom:1rem;font-size:1.1rem}.tip-card p{color:var(--text-tertiary);line-height:1.5;margin:0;font-size:.95rem}@media (max-width: 768px){.reference-container{padding:1.5rem;margin:1rem}.reference-container h1{font-size:1.8rem}.reference-section{padding:1.5rem;margin-bottom:2rem}.reference-braille-grid{grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1rem}.braille-item{padding:1rem}.capital-example,.number-example{flex-direction:column;gap:.5rem}.tips-grid{grid-template-columns:1fr}}@media (max-width: 480px){.reference-braille-grid{grid-template-columns:repeat(2,1fr)}.braille-item{padding:.75rem}.braille-display{min-height:50px}.braille-letter{font-size:1.5rem}.braille-unicode{font-size:1.2rem}.braille-name{font-size:.8rem}}:root{--bg-primary: #ffffff;--bg-secondary: rgba(255, 255, 255, .95);--bg-tertiary: rgba(248, 249, 250, .95);--bg-accent: rgba(102, 126, 234, .08);--text-primary: #1a1a1a;--text-secondary: #2d2d2d;--text-tertiary: #404040;--border-color: rgba(0, 0, 0, .12);--border-hover: rgba(0, 0, 0, .25);--shadow-color: rgba(0, 0, 0, .15);--shadow-light: rgba(0, 0, 0, .08);--accent-purple: #8b5cf6;--accent-purple-light: #a78bfa;--accent-purple-dark: #7c3aed;--accent-purple-hover: #6d28d9;--accent: var(--accent-purple);--accent-light: var(--accent-purple-light);--accent-dark: var(--accent-purple-dark);--accent-hover: var(--accent-purple-hover);--radius-s: 8px;--radius-m: 12px;--radius-l: 16px;--radius-xl: 20px}[data-theme=dark]{--bg-primary: #0f0f0f;--bg-secondary: rgba(25, 25, 25, .95);--bg-tertiary: rgba(35, 35, 35, .95);--bg-accent: rgba(102, 126, 234, .15);--text-primary: #ffffff;--text-secondary: #e8e8e8;--text-tertiary: #d0d0d0;--border-color: rgba(255, 255, 255, .18);--border-hover: rgba(255, 255, 255, .3);--shadow-color: rgba(0, 0, 0, .6);--shadow-light: rgba(0, 0, 0, .35);--accent-purple: #a855f7;--accent-purple-light: #c084fc;--accent-purple-dark: #9333ea;--accent-purple-hover: #b967f0;--accent: var(--accent-purple);--accent-light: var(--accent-purple-light);--accent-dark: var(--accent-purple-dark);--accent-hover: var(--accent-purple-hover)}*{margin:0;padding:0;box-sizing:border-box;transition:background-color .5s cubic-bezier(.4,0,.2,1),color .5s cubic-bezier(.4,0,.2,1),border-color .5s cubic-bezier(.4,0,.2,1),box-shadow .5s cubic-bezier(.4,0,.2,1)}html,body{background:var(--bg-primary);color:var(--text-primary);transition:background-color .5s cubic-bezier(.4,0,.2,1),color .5s cubic-bezier(.4,0,.2,1);margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh}.app{display:flex;min-height:100vh;background:var(--bg-primary);color:var(--text-primary)}.mobile-menu-btn{display:none;position:fixed;top:1rem;left:1rem;z-index:1001;background:var(--bg-secondary);border:2px solid var(--border-color);border-radius:12px;width:48px;height:48px;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);flex-direction:column;align-items:center;justify-content:center;gap:3px;padding:0;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 4px 15px var(--shadow-light)}.mobile-menu-btn:hover{background:var(--bg-accent);border-color:var(--border-hover);transform:scale(1.05);box-shadow:0 6px 20px var(--shadow-color)}.mobile-menu-btn:before,.mobile-menu-btn:after,.mobile-menu-btn span{content:"";display:block;width:20px;height:2px;background:var(--text-primary);border-radius:1px;transition:all .3s ease}.mobile-menu-btn span{width:20px;height:2px;background:var(--text-primary);border-radius:1px}.app-theme-toggle{position:fixed;top:1rem;right:1rem;z-index:1001;background:var(--bg-secondary);border:2px solid var(--border-color);border-radius:50%;width:48px;height:48px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);font-size:1.1rem;font-weight:700;color:var(--text-primary);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 4px 15px var(--shadow-light)}.app-theme-toggle:hover{background:var(--bg-accent);border-color:var(--border-hover);transform:scale(1.1) rotate(180deg);box-shadow:0 6px 20px var(--shadow-color)}.app-accent-toggle{position:fixed;top:1rem;right:4.25rem;z-index:1001;background:var(--bg-secondary);border:2px solid var(--border-color);border-radius:50%;width:42px;height:42px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:0 4px 15px var(--shadow-light)}.app-accent-toggle:hover{background:var(--bg-accent);border-color:var(--border-hover);transform:scale(1.05)}.accent-swatch{width:18px;height:18px;border-radius:50%;background:linear-gradient(135deg,var(--accent-light),var(--accent));box-shadow:0 0 0 2px var(--bg-secondary) inset}.sidebar{width:260px;background:var(--bg-secondary);border-right:1px solid var(--border-color);box-shadow:4px 0 20px var(--shadow-light);transition:all .3s cubic-bezier(.4,0,.2,1);position:fixed;top:0;left:0;height:100vh;z-index:1000;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);overflow:hidden}.sidebar-collapsed{width:70px}.sidebar-header{padding:2rem 1.5rem 1.5rem;border-bottom:1px solid var(--border-color);background:linear-gradient(135deg,var(--bg-tertiary) 0%,var(--bg-secondary) 100%);display:flex;align-items:center;justify-content:space-between;gap:.5rem;box-shadow:0 2px 10px var(--shadow-light);position:relative}.sidebar-header:after{content:"";position:absolute;bottom:0;left:1.5rem;right:1.5rem;height:2px;background:linear-gradient(90deg,var(--accent) 0%,var(--accent-light) 50%,var(--accent) 100%);border-radius:1px}.sidebar-header h2{margin:0;color:var(--text-primary);font-size:1.2rem;text-align:center;flex:1;transition:all .3s ease}.sidebar-collapsed .sidebar-header{padding:1.5rem .5rem 1rem;justify-content:center}.sidebar-collapsed .sidebar-header h2{font-size:1rem}.sidebar-collapse-btn{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:6px;width:32px;height:32px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .3s ease;flex-shrink:0;padding:0}.sidebar-collapse-btn:hover{background:var(--bg-accent);border-color:var(--accent);transform:scale(1.05);box-shadow:0 2px 8px var(--shadow-light)}.hamburger-icon{display:flex;flex-direction:column;gap:2px;width:14px;height:10px}.hamburger-icon span{display:block;height:2px;width:100%;background:var(--text-primary);border-radius:1px;transition:all .3s ease}.sidebar-collapsed .hamburger-icon span:nth-child(1){transform:rotate(45deg) translate(2px,2px)}.sidebar-collapsed .hamburger-icon span:nth-child(2){opacity:0;transform:scale(0)}.sidebar-collapsed .hamburger-icon span:nth-child(3){transform:rotate(-45deg) translate(2px,-2px)}.sidebar-nav{list-style:none;margin:0;padding:.5rem .75rem 1rem;display:flex;flex-direction:column;gap:.5rem}.sidebar-nav li{margin:0}.nav-item{width:100%;display:flex;align-items:center;gap:1rem;padding:1rem 1.25rem;background:none;border:none;color:var(--text-secondary);cursor:pointer;transition:background-color .2s ease,color .2s ease,box-shadow .2s ease;text-align:left;font-size:1rem;justify-content:flex-start;border-radius:12px;position:relative;box-sizing:border-box}.nav-item:before{content:"";position:absolute;left:8px;top:50%;transform:translateY(-50%);width:4px;height:0;background:linear-gradient(180deg,var(--accent-light),var(--accent));border-radius:2px;transition:height .2s ease}.nav-item:hover:before,.nav-item-active:before{height:60%}.sidebar-collapsed .nav-item{padding:1rem .5rem;justify-content:center;gap:0}.nav-item:hover{background:var(--bg-accent);color:var(--text-primary);box-shadow:0 4px 10px var(--shadow-light),0 0 0 1px color-mix(in srgb,var(--accent) 30%,transparent) inset;outline:1px solid color-mix(in srgb,var(--accent) 35%,transparent)}.sidebar-collapsed .nav-item:hover{box-shadow:0 4px 10px var(--shadow-light),0 0 0 1px color-mix(in srgb,var(--accent) 24%,transparent) inset}.nav-item-active{background:linear-gradient(135deg,var(--accent) 0%,var(--accent-dark) 100%);color:#fff;box-shadow:0 3px 12px var(--shadow-color)}.nav-item-active:hover{background:linear-gradient(135deg,var(--accent-hover) 0%,var(--accent) 100%);box-shadow:0 5px 18px var(--shadow-color)}.sidebar-collapsed .nav-item-active:hover{transform:scale(1.1)}.nav-icon{font-size:1.3rem;font-weight:700;min-width:24px;text-align:center;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:8px;background:linear-gradient(135deg,var(--accent-light) 0%,var(--accent) 100%);color:#fff;transition:all .3s ease;box-shadow:0 2px 8px var(--shadow-light)}.nav-item:hover .nav-icon{background:linear-gradient(135deg,var(--accent) 0%,var(--accent-dark) 100%);transform:scale(1.05);box-shadow:0 4px 12px var(--shadow-color)}.nav-item-active .nav-icon{background:#ffffff40;color:#fff}.nav-text{font-weight:500;transition:opacity .3s ease}.sidebar-collapsed .nav-text{opacity:0;width:0;overflow:hidden}.nav-item:focus-visible{outline:2px solid var(--accent);outline-offset:0}.sidebar-collapsed .nav-item{position:relative}.sidebar-collapsed .nav-item:hover:after{content:attr(title);position:absolute;left:50%;bottom:6px;transform:translate(-50%);max-width:calc(100% - 16px);overflow:hidden;text-overflow:ellipsis;background:var(--bg-tertiary);color:var(--text-primary);padding:.35rem .5rem;border-radius:var(--radius-s);font-size:.85rem;box-shadow:inset 0 0 0 1px var(--border-color)}.sidebar-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;z-index:999}.main-content{flex:1;margin-left:260px;padding:2rem;transition:all .3s cubic-bezier(.4,0,.2,1);background:linear-gradient(135deg,var(--bg-primary) 0%,var(--bg-secondary) 100%);min-height:100vh}.main-content-collapsed{margin-left:70px}@media (max-width: 768px){.mobile-menu-btn{display:flex;align-items:center;justify-content:center}.sidebar{transform:translate(-100%);width:260px}.sidebar-collapsed{width:260px}.sidebar-open{transform:translate(0)}.sidebar-overlay{display:block}.main-content,.main-content-collapsed{margin-left:0;padding:5rem 1rem 1rem}.app-theme-toggle{top:1rem;right:1rem}.app-accent-toggle{top:1rem;right:4.25rem}.sidebar-collapse-btn{display:none}}@media (max-width: 480px){.main-content{padding:5rem .5rem 1rem}.app-theme-toggle{width:40px;height:40px;font-size:.9rem}.app-accent-toggle{width:36px;height:36px;right:3.75rem}.mobile-menu-btn{width:40px;height:40px}.mobile-menu-btn:before,.mobile-menu-btn:after,.mobile-menu-btn span{width:16px}}[data-accent=purple]{--accent: #8b5cf6;--accent-light: #a78bfa;--accent-dark: #7c3aed;--accent-hover: #6d28d9;--bg-accent: rgba(139, 92, 246, .08)}[data-theme=dark][data-accent=purple]{--bg-accent: rgba(139, 92, 246, .15)}[data-accent=teal]{--accent: #14b8a6;--accent-light: #2dd4bf;--accent-dark: #0d9488;--accent-hover: #0f766e;--bg-accent: rgba(20, 184, 166, .08)}[data-theme=dark][data-accent=teal]{--bg-accent: rgba(20, 184, 166, .15)}[data-accent=emerald]{--accent: #10b981;--accent-light: #34d399;--accent-dark: #059669;--accent-hover: #047857;--bg-accent: rgba(16, 185, 129, .08)}[data-theme=dark][data-accent=emerald]{--bg-accent: rgba(16, 185, 129, .15)}[data-accent=amber]{--accent: #f59e0b;--accent-light: #fbbf24;--accent-dark: #d97706;--accent-hover: #b45309;--bg-accent: rgba(245, 158, 11, .08)}[data-theme=dark][data-accent=amber]{--bg-accent: rgba(245, 158, 11, .15)}[data-accent=rose]{--accent: #f43f5e;--accent-light: #fb7185;--accent-dark: #e11d48;--accent-hover: #be123c;--bg-accent: rgba(244, 63, 94, .08)}[data-theme=dark][data-accent=rose]{--bg-accent: rgba(244, 63, 94, .15)}[data-accent=blue]{--accent: #3b82f6;--accent-light: #60a5fa;--accent-dark: #2563eb;--accent-hover: #1d4ed8;--bg-accent: rgba(59, 130, 246, .08)}[data-theme=dark][data-accent=blue]{--bg-accent: rgba(59, 130, 246, .15)}.text-center{text-align:center}.mb-1{margin-bottom:.5rem}.mb-2{margin-bottom:1rem}.mb-3{margin-bottom:1.5rem}.mb-4{margin-bottom:2rem}.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}.mt-4{margin-top:2rem}.hidden{display:none}.visible{display:block}@media (prefers-reduced-motion: reduce){*,*:before,*:after{transition:none!important;animation:none!important;scroll-behavior:auto!important}}