:root{--color-primary:#4692be;--color-primary-dark:#2d76a0;--color-navy:#23495f;--color-accent:#de8330;--color-accent-dark:#c9721f;--color-text:#282828;--color-text-muted:#6b6b6b;--color-border:#dbdbdb;--color-surface:#fff;--color-surface-soft:#f4f7fa;--color-light-blue:#eaf3f9;--color-danger:#c0392b;--color-success:#2e8b57;--font-sans:"PT Sans", "Segoe UI", Arial, sans-serif;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--shadow-sm:0 1px 3px #23495f1a;--shadow-md:0 6px 18px #23495f24;--tap-target:44px;--sidebar-width:240px}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);color:var(--color-text);background:var(--color-surface-soft);margin:0;font-size:16px;line-height:1.5}h1,h2,h3,p{margin:0}a{color:var(--color-primary-dark);text-decoration:none}a:hover{text-decoration:underline}:focus-visible{outline-offset:2px;outline:3px solid #4692be80}.button{min-height:var(--tap-target);font:inherit;letter-spacing:.03em;text-transform:uppercase;color:#fff;background:var(--color-accent);border-radius:var(--radius-sm);cursor:pointer;border:0;justify-content:center;align-items:center;gap:6px;padding:0 20px;font-weight:700;text-decoration:none;transition:background .15s;display:inline-flex}.button:hover{background:var(--color-accent-dark);text-decoration:none}.button:disabled{opacity:.6;cursor:progress}.button-secondary{color:var(--color-primary-dark);background:var(--color-surface);border:1px solid var(--color-border)}.button-secondary:hover{background:var(--color-light-blue)}.button-danger{color:var(--color-danger);background:var(--color-surface);border:1px solid var(--color-danger)}.button-danger:hover{color:#fff;background:var(--color-danger)}.alert{border-radius:var(--radius-md);border:1px solid;padding:12px 16px}.alert-error{color:#8a2a1f;background:#fdecea;border-color:#f5c6c0}.alert-success{color:#1f5f3b;background:#e9f6ee;border-color:#bfe3cd}.alert ul{margin:6px 0 0;padding-left:20px}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}