:root{--mcev-accent:#e7222e;--mcev-header-bg:#1a1a1a;--mcev-header-text:#ffffff;--mcev-header-muted:#999999;--mcev-bg:#ffffff;--mcev-card-bg:#f8f9fa;--mcev-text:#282828;--mcev-text-muted:#666666;--mcev-accent:#ff2519;--mcev-primary:#ff2519;--mcev-primary-hover:#e61e13;--mcev-border:#e2e2e2;--mcev-radius:2px;--mcev-font:'Inter', -apple-system, system-ui, sans-serif}body[data-theme='dark']{--mcev-bg:#000000;--mcev-card-bg:#1a1a1a;--mcev-text:#ffffff;--mcev-text-muted:#bbbbbb;--mcev-border:#333333}@media (prefers-color-scheme:dark){body:not([data-theme='default']){--mcev-bg:#000000;--mcev-card-bg:#1a1a1a;--mcev-text:#ffffff;--mcev-text-muted:#bbbbbb;--mcev-border:#333333}}.night-mode,.is-dark-mode,.dark-mode{--mcev-bg:#000000;--mcev-card-bg:#1a1a1a;--mcev-text:#ffffff;--mcev-text-muted:#bbbbbb;--mcev-border:#333333}.mcev-container{font-family:var(--mcev-font);background:var(--mcev-bg);color:var(--mcev-text);padding:0;border-radius:var(--mcev-radius);max-width:1280px;margin:2rem auto;box-shadow:0 4px 20px rgba(0,0,0,.08);border:1px solid var(--mcev-border);overflow:hidden}.mcev-header{background:#000;border-left:5px solid var(--mcev-accent);padding:1.5rem 2rem;display:flex;align-items:center}.mcev-header h1{color:#fff;margin:0;font-size:1.5rem;font-weight:800;letter-spacing:.5px;text-transform:uppercase;line-height:1.2}.mcev-header p{color:var(--mcev-header-muted);font-size:.9rem;margin:.3rem 0 0 0}.mcev-form,.mcev-result{padding:2rem}.mcev-form{display:flex;flex-direction:column;gap:1.25rem}.mcev-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.mcev-ad-slot{padding:20px;margin-top:20px;margin-bottom:20px;text-align:center}@media (max-width:480px){.mcev-row{grid-template-columns:1fr}}.mcev-field{display:flex;flex-direction:column;gap:.5rem}.mcev-field label{font-size:.85rem;font-weight:600;color:var(--mcev-text-muted);text-transform:uppercase;letter-spacing:.5px}.mcev-field input,.mcev-field select{background:var(--mcev-bg);border:1px solid var(--mcev-border);color:var(--mcev-text);padding:.75rem 1rem;border-radius:var(--mcev-radius);font-size:1rem;transition:all 0.2s ease;box-shadow:inset 0 1px 2px rgba(0,0,0,.02)}.mcev-field input:hover,.mcev-field select:hover{border-color:#999}.mcev-field input:focus,.mcev-field select:focus{border-color:var(--mcev-accent);outline:none;background:var(--mcev-bg);box-shadow:0 0 0 3px rgba(231,34,46,.1)}.mcev-btn{width:100%;background:var(--mcev-primary);color:#fff;font-weight:700;padding:1.1rem;border:none;border-radius:var(--mcev-radius);cursor:pointer;font-size:1rem;transition:background 0.2s,opacity 0.2s;text-transform:uppercase;letter-spacing:1.5px;display:flex;justify-content:center;align-items:center;position:relative;min-height:54px}.mcev-btn [hidden]{display:none!important}.mcev-btn:disabled{opacity:.8;cursor:not-allowed}.mcev-btn:hover{background:var(--mcev-primary-hover);transform:translateY(-2px)}.mcev-btn:active{transform:translateY(0)}.mcev-result{border-top:1px solid var(--mcev-border);animation:mcev-fade-in 0.4s ease-out}@keyframes mcev-fade-in{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.mcev-result-card{background:var(--mcev-bg);padding:2rem 1.5rem;border-radius:var(--mcev-radius);text-align:center;border:1px solid var(--mcev-border)}.mcev-result-card .label{display:block;font-size:.9rem;color:var(--mcev-text-muted);margin-bottom:.5rem}.range-display{color:var(--mcev-primary);font-weight:800;line-height:1;margin:.5rem 0}.range-val{font-size:3.5rem}.mcev-unit{font-size:1.5rem;margin-left:.2rem}.range-window{font-size:.9rem;color:var(--mcev-text);margin-top:.5rem}.mcev-tips{margin-top:1.5rem;padding:1.2rem;background:var(--mcev-card-bg);border:1px solid var(--mcev-border);border-radius:var(--mcev-radius)}.mcev-tips h4{margin:0 0 .8rem 0;color:var(--mcev-text);font-size:1rem;font-weight:700}.mcev-tips ul{margin:0;padding-left:1.2rem;text-align:left;color:var(--mcev-text-muted);font-size:.9rem}.mcev-tips li{margin-bottom:.3rem}.btn-loader{display:inline-block}