:root{--ink: #24313f;--body: #5c6b78;--body-strong: #3a4b5a;--mute: #8a97a3;--canvas: #ffffff;--canvas-soft: #f5f8fa;--hairline: #dfe4e8;--primary: #2f7ed8;--primary-hover: #256bb8;--on-primary: #ffffff;--success: #2e8b57;--danger: #c0392b;--r-sm: 3px;--r-md: 4px}*{box-sizing:border-box}body{margin:0;background:var(--canvas);color:var(--ink);font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif;font-size:15px;line-height:1.5}h1,h2,h3{font-family:inherit;font-weight:700;color:var(--ink);margin:0 0 .5em}p{color:var(--body);margin:0 0 1em}a{color:var(--primary)}a:hover{color:var(--primary-hover)}.btn-primary{background:var(--primary);color:var(--on-primary);border:none;border-radius:var(--r-sm);font-size:14px;font-weight:600;padding:8px 16px;cursor:pointer;transition:background-color .12s}.btn-primary:hover{background:var(--primary-hover)}.btn-primary:disabled{background:var(--mute);cursor:not-allowed}.btn-secondary{background:var(--canvas);color:var(--body-strong);border:1px solid var(--hairline);border-radius:var(--r-sm);font-size:14px;font-weight:600;padding:8px 16px;cursor:pointer;transition:border-color .12s,background-color .12s}.btn-secondary:hover{border-color:var(--body);background:var(--canvas-soft)}.form-input,.form-textarea,select{background:var(--canvas);border:1px solid var(--hairline);border-radius:var(--r-sm);color:var(--ink);padding:8px 10px;font-size:14px;font-family:inherit}.form-input:focus,.form-textarea:focus{outline:none;border-color:var(--primary)}.card{background:var(--canvas-soft);border:1px solid var(--hairline);border-radius:var(--r-md);padding:24px}.hairline{border-color:var(--hairline)}.container{max-width:880px;margin:0 auto;padding:40px 24px}.prepare-grid{display:grid;grid-template-columns:1fr 320px;gap:24px;align-items:start;max-width:1200px;margin:0 auto;padding:0 24px 40px}@media(max-width:860px){.prepare-grid{grid-template-columns:1fr}}