:root{--bg:#f5f6f8;--surface:#fff;--text:#1a1f2b;--muted:#5b6372;--primary:#a01523;--primary-dark:#790f1a;--danger-bg:#ffe8eb;--danger-text:#8f0f22}*{box-sizing:border-box}body,html{margin:0;padding:0;background:linear-gradient(160deg,#f9fafb,#eef2f6);color:var(--text);font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}a{color:inherit;text-decoration:none}main{min-height:100dvh}.page-wrap{width:min(960px,92vw);margin:0 auto;padding:1rem}.card{background:var(--surface);border-radius:12px;box-shadow:0 8px 24px rgba(15,23,42,.08);padding:1.25rem}.form-grid{display:grid;gap:.9rem}button,input{width:100%;border-radius:8px;border:1px solid #d9deea;padding:.7rem .8rem;font-size:1rem}button{background:var(--primary);color:#fff;border:none;cursor:pointer}button:hover{background:var(--primary-dark)}button.secondary{background:transparent;color:var(--text);border:1px solid #c7cfdd}.navbar{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:1rem}.nav-links{display:flex;gap:.6rem;flex-wrap:wrap}.notice{border-radius:8px;padding:.7rem .8rem;background:#eef3ff;color:#23407d}.notice.error{background:var(--danger-bg);color:var(--danger-text)}@media (max-width:640px){.card{padding:1rem}.navbar{flex-direction:column;align-items:stretch}}