:root{--bs-primary: #1d4e89;--bs-primary-rgb: 29, 78, 137;--bs-secondary: #6c757d;--bs-secondary-rgb: 108, 117, 125;--bs-danger: #dc3545;--bs-danger-rgb: 220, 53, 69;--bs-border-color: #ced4da}.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}.btn{--btn-bg: transparent;--btn-border: transparent;--btn-color: #212529;--btn-hover-bg: transparent;--btn-hover-border: transparent;--btn-hover-color: #212529;--btn-disabled-opacity: .65;display:inline-flex;align-items:center;justify-content:center;gap:.25rem;font-weight:500;line-height:1.5;color:var(--btn-color);text-align:center;text-decoration:none;vertical-align:middle;cursor:pointer;-webkit-user-select:none;user-select:none;background-color:var(--btn-bg);border:1px solid var(--btn-border);padding:.375rem .75rem;font-size:1rem;border-radius:.375rem;transition:color .15s ease-in-out,background-color .15s ease-in-out,border-color .15s ease-in-out,box-shadow .15s ease-in-out}.btn:hover{color:var(--btn-hover-color);background-color:var(--btn-hover-bg);border-color:var(--btn-hover-border)}.btn:focus-visible{outline:0;box-shadow:0 0 0 .2rem rgba(var(--bs-primary-rgb),.35)}.btn:disabled,.btn.disabled{pointer-events:none;opacity:var(--btn-disabled-opacity)}.btn-sm{padding:.25rem .5rem;font-size:.875rem;border-radius:.3rem}.btn-lg{padding:.5rem 1rem;font-size:1.125rem;border-radius:.5rem}.btn-primary{--btn-bg: var(--bs-primary);--btn-border: var(--bs-primary);--btn-color: #fff;--btn-hover-bg: #0b5ed7;--btn-hover-border: #0a58ca;--btn-hover-color: #fff}.btn-danger{--btn-bg: var(--bs-danger);--btn-border: var(--bs-danger);--btn-color: #fff;--btn-hover-bg: #bb2d3b;--btn-hover-border: #b02a37;--btn-hover-color: #fff}.btn-outline-primary{--btn-bg: #ffffff;--btn-border: #123f73;--btn-color: #123f73;--btn-hover-bg: #163d6c;--btn-hover-border: #163d6c;--btn-hover-color: #fff}.btn-outline-secondary{--btn-bg: transparent;--btn-border: var(--bs-secondary);--btn-color: var(--bs-secondary);--btn-hover-bg: var(--bs-secondary);--btn-hover-border: var(--bs-secondary);--btn-hover-color: #fff}.btn-outline-danger{--btn-bg: transparent;--btn-border: var(--bs-danger);--btn-color: var(--bs-danger);--btn-hover-bg: var(--bs-danger);--btn-hover-border: var(--bs-danger);--btn-hover-color: #fff}.form-control,.form-select{display:block;width:100%;padding:.375rem .75rem;font-size:1rem;font-weight:400;line-height:1.5;color:#212529;background-color:#fff;background-clip:padding-box;border:1px solid var(--bs-border-color);border-radius:.375rem}.form-select{appearance:auto}.form-control:focus,.form-select:focus{border-color:#86b7fe;outline:0;box-shadow:0 0 0 .2rem rgba(var(--bs-primary-rgb),.25)}.form-control-lg{min-height:calc(1.5em + 1rem + 2px);padding:.5rem 1rem;font-size:1.25rem;border-radius:.5rem}.px-4{padding-inline:1.5rem!important}.px-5{padding-inline:3rem!important}.me-2{margin-inline-end:.5rem!important}:root{--sidnix-navy: #1D3557;--sidnix-navy-hover: #2A466E;--sidnix-shadow-navy: #0D1B2A;--sidnix-green: #2A9D8F;--sidnix-green-hover: #38B2A3;--sidnix-shadow-green: #1B655C;--sidnix-red: #E63946;--sidnix-red-hover: #F84D5B;--sidnix-shadow-red: #9A2624;--bg-gradient: linear-gradient(135deg, rgba(69, 123, 157, .08) 0%, rgba(42, 157, 143, .08) 100%);--glass-bg: rgba(255, 255, 255, .85);--radius-lg: 16px;--radius-xl: 24px}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background-color:#f5f7fa;color:#334155}.skip-link{position:absolute;inset-inline-start:-999px;top:auto;width:1px;height:1px;overflow:hidden}.skip-link:focus{position:fixed;inset-inline-start:16px;top:16px;width:auto;height:auto;padding:10px 14px;background:#fff;color:#1d3557;border:2px solid #1D3557;border-radius:8px;z-index:10000;text-decoration:none}.page-container{background:#f6f7f9}.quiz-container,.home-hero-inner{background:#ffffffd9!important;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);position:relative;z-index:1}.home-page,.quiz-page{position:relative;background-color:#f5f7fa;background-image:linear-gradient(rgba(29,53,87,.1) 1px,transparent 1px),linear-gradient(90deg,rgba(29,53,87,.1) 1px,transparent 1px);background-size:40px 40px;background-attachment:fixed}.home-page:after,.quiz-page:after{content:"";position:fixed;top:0;inset-inline-start:0;width:100%;height:100%;background:radial-gradient(circle at center,transparent 20%,rgba(245,247,250,.8) 100%);pointer-events:none;z-index:0}.quiz-container,.home-hero-inner{max-width:850px;margin:0 auto;background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);padding:40px;border-radius:var(--radius-xl);border:1px solid rgba(255,255,255,.5);box-shadow:0 10px 30px #0000000a}.lang-select{padding:8px 16px;border-radius:999px;border:1px solid rgba(0,0,0,.1);background:#fff;font-weight:600;cursor:pointer;transition:all .2s}.lang-select:hover{border-color:var(--sidnix-navy)}.btn-lg{border-radius:12px;font-weight:700;letter-spacing:.02em;transition:all .2s cubic-bezier(.34,1.56,.64,1);border:none;text-transform:uppercase;font-size:.95rem}.btn-sidnix-submit:active,.btn-sidnix-next:active,.btn-sidnix-restart:active{transform:translateY(4px)!important;box-shadow:0 2px #00000080!important;transition:all .05s}.btn-sidnix-submit{background-color:var(--sidnix-navy);color:#fff;box-shadow:0 6px 0 var(--sidnix-shadow-navy)}.btn-sidnix-submit:hover:not(:disabled){background-color:var(--sidnix-navy-hover);transform:translateY(-2px);box-shadow:0 8px 0 var(--sidnix-shadow-navy)}.btn-sidnix-next{background-color:var(--sidnix-green);color:#fff;box-shadow:0 6px 0 var(--sidnix-shadow-green)}.btn-sidnix-next:hover:not(:disabled){background-color:var(--sidnix-green-hover);transform:translateY(-2px);box-shadow:0 8px 0 var(--sidnix-shadow-green)}@keyframes sidnix-pulse{0%{transform:scale(1);box-shadow:0 6px 0 var(--sidnix-shadow-red)}50%{transform:scale(1.05);box-shadow:0 10px 20px #e639464d}to{transform:scale(1);box-shadow:0 6px 0 var(--sidnix-shadow-red)}}@keyframes patternMove{0%{background-position:0 0}to{background-position:24px 24px}}.home-page{animation:patternMove 60s linear infinite}.btn-sidnix-restart{background-color:var(--sidnix-red);color:#fff;box-shadow:0 6px 0 var(--sidnix-shadow-red);animation:sidnix-pulse 2s infinite ease-in-out}.btn-sidnix-restart:hover{background-color:var(--sidnix-red-hover);animation-play-state:paused}.quiz-header-card{background:#fff6;border:1px solid rgba(0,0,0,.05);border-radius:var(--radius-lg);padding:20px;margin-bottom:30px}.option-container{margin-bottom:12px}.option-label-card{width:100%;max-width:100%;box-sizing:border-box;cursor:pointer;display:flex;align-items:center;gap:15px;padding:16px 20px;background:#fff;border:2px solid #e2e8f0;border-radius:12px;box-shadow:inset 0 0 0 0 transparent;transition:border-color .2s ease,background-color .2s ease,box-shadow .2s ease,transform .2s ease}.option-label-card.is-correct{border-color:#2a9d8f!important;background-color:#f0fdf4!important;box-shadow:inset 6px 0 #2a9d8f}.option-label-card.is-wrong{border-color:#e63946!important;background-color:#fef2f2!important;box-shadow:inset 6px 0 #e63946}@media(hover:hover)and (pointer:fine){.option-label-card:hover:not(.is-disabled){border-color:var(--sidnix-navy);background:#f8fafc;box-shadow:0 1px #1d355714}}.option-label-card.is-selected{border-color:var(--sidnix-navy);background:#f0f7ff}h1,h2,h3{color:var(--sidnix-navy);font-weight:800}.question-text{margin-left:0;font-size:1.5rem;line-height:1.3;margin-bottom:25px}.topbar{position:relative;z-index:9999!important;background:transparent}.navbar-logo{height:clamp(32px,4vw,56px);width:auto;transform:translateZ(0);filter:saturate(1.1) contrast(1.05);image-rendering:-webkit-optimize-contrast;image-rendering:crisp-edges}.navbar-logo:hover{transform:rotate(-2deg) scale(1.05)}.navbar-brand{isolation:isolate}.quiz-card{position:relative;display:block;background:#fff;border:1px solid rgba(0,0,0,.1);border-radius:12px;box-shadow:0 1px 4px #00000014;cursor:pointer;text-decoration:none;transition:transform .15s ease,box-shadow .2s ease,border-color .2s ease}.quiz-card:hover{text-decoration:none}.quiz-card:before{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;box-shadow:inset 0 1px #fff9}.quiz-card:focus-visible{outline:3px solid rgba(9,132,227,.35);outline-offset:4px}.quiz-card:active{transform:translateY(1px) scale(.99);box-shadow:0 0 #0000}@media(hover:hover)and (pointer:fine){.quiz-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px #00000024;border-color:#00000029}.quiz-card:active{transform:translateY(0) scale(.995)}}.feedback-link{font-size:.9rem;opacity:.85}.feedback-link:hover{opacity:1;text-decoration:underline}