body{background:#f4f8fb;color:#2e3440;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}.dd-page{max-width:880px;margin:45px auto;padding:0 18px}.back{display:inline-block;margin-bottom:18px;color:#4e6ef2}.card{background:#fff;border-radius:14px;padding:28px 34px;box-shadow:0 8px 32px rgba(42,56,88,.08)}.card h1{font-size:28px;margin:0 0 24px}.small-card{max-width:480px;margin:70px auto}.form-control{border-radius:6px;box-shadow:none}.btn-primary{background:#4e6ef2;border-color:#4e6ef2}